This cannot be the infrared of pure \({\cal N}=1\)  SQCD. According to the Seiberg duality, the IR of pure \({\cal N}=1\)  SQCD is described by \({\rm SU}(\widetilde{n}_c)\)  gauge theory with \(n_f\)  flavors plus a meson \(M_i^j\)  and an opportune superpotential \(\widetilde{D}M D\)  [1]}. We have the right gauge group and the right dual-quark, but the meson \(M_i^j\)  is missing. Note that \(A_{\mathbf {r}}\)  cannot be identified with the meson of Seiberg duality. First of all, \(A_{\mathbf {r}}\)  has no flavor charge. Second, from (REF ) we can see that it becomes massive after the \(\mu \)  breaking. Thus, it should be integrated out to get the infrared conformal fixed point.
